Sugar-cane mill.



W. J. DYER & A. F. EWART.

SUGAR CANE- MILL.

APPLICATION- IILED JUNE 19, 1911 I 1,021,829, Patented Apr. 2, 1912.

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SUGAR UANE MILL.

APPLICATION FILED JUNE 19, 1911.

1,021,829. Patented Apr. 2, 1912.

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JOHN 1am AINII) ARTHUR mIDRICK WAIT, OI HONOLULU, TERRITORY OF HAWAII, ASSIGNORSTO'HONOLULU IRON WORKS OO HPANY, Ol' HONOLULU, TERR'I TOBY O1 mwm A 01' THE TERRITORY OF HAWAII.

SUGAR-CANE HILL.

Sinciflcation of Letters Patent. Application flled June 19, 1911. Serial No. 888,987.

To all whom it may concern:

Be it lmown, that we, \ViLLmirJoI-m Drnn. a citizen of the United States, and Alrruirn F. Ewanrr, a citizen of the British Empire, both residing at. vHonolulu, county ers. to permit the journals of the upper roller to be of a larger diameter than heretofore, to apply hydraulic acksto the upper roller and provide easy access to same for repairs such as the renewal of a crimp, and to provide for adjustment of the returnerbar blade against-the feed roller.

Vith these and other objects in view the invention consists in the construction and novel combination 1 and arrangement of parts hereinafter fully described, and illustratedin the accompanyingdrawings, lt being understood that various' changes in form. proportions, and minor'details of construction Jnay be resorted to within the scope of the appended claims. t

In the accompanying drawings, forming a part of this specification, Figure 1 represents in side elevation a sugar-cane mill embodying our improvements. Fig. 2 is a sectional elevation of a portion of same mill taken through the center of Fig. 1. i

Referring to the drawings, the upper roller 1, the feed roller 2 and the discharge rol1er 3 are of the usual construction with their axes in triangular arrangement. The housings ,4 are preferably steel castings which are bolted inthe usual manner to a mill bed (not shown). The bearings 5 for the journals of the rollers 2 and 3 are of brass, gun metal, or other suitable material and are provided with downwardly projecting flanges 6 adapted to straddle the facings,

7 on the housing 4 below the gaps or recesses 8 and 9 in the front and rear of the housing 4 respectively. Bearing 'caps 10 of the housing 4, and are bolted by the two tie-bolts 12 passing in horizontal grooves 14 in the housing 4 and through thelugs 15 on each side of theupper ends of said caps, and by the larger tie-bolt 13 passing through holes cored in the housing 4 and in the center of the lower ends of the caps 10 and 11. The vertical walls of the bearings 5 abut the caps 10 and 11.

hen it is desired to change the opening between the upper roller 1 and either the feed roller 2 or the discharge roller 3, as for example on account of the rollers becoming smaller due towear, the height of the roller 2 or 3 may be altered by plate shims placed i on the housings 4 and under the bearings 5, the flanges 6 still engaging the facings 7 and retaining the bearings 5 ,111 place laterally. Shims may also be introduced between the cap 10 or 11 and the front or rear ends of the housing 4 above and below the recesses 8 or 9 respectively.

The housing 4 is provided with the vertical ap or recess 16 to receive the top bearing-1 for the journal of the upper roller 1, and the lower portion 18 of the recess 16 is babbitted to suit said journal when itis in its lowest position. This top bearing is of gun metal or other suitable material and may slide vertically within the recess 16 .with the movement of the roller .1.

The cap 19, preferably a steel casting, is

and 11 are fitted to the front and the rear Patented Apr. 2, 1912.

fitted to engage the jaws 20 at the top of the housing 4. At the center of'the cap 19 is a vertical cylinder 21 bored to receive the hydraulic ram 22.. The cap 19 and the cylinder 21 are preferably made in one :piece.

The lower end 23 of the ram 22 is turned spherical'to. engage a corresponding concave in the top of a steel shoe 24%placed above the topofthe bearing 17.; The cylinder21 is provided with a port 25 to which the pipe to the hydraulic accumulator is attached in the usual manner. The follower 26'is secured to the top of the ram 22 by the tap bolt 27 with the leather or other crimp :28 interposed.

Thecbridle-plate 29, which is of cast ,iron, is recessed to fit over the upper-end of the cylinder 21, and a steel plate, 30 is inter posed to preVentlea-kagethrough the bridleplate 29 from the cylinder 21, Fig. 2. A crimp31 is employed to seal the joint between the plate 30 and the cylinder 21. An eye-bolt 32 is provided for lifting off the bridle plate 29. The bridle plate 29 1s firmly clamped in position by the two king bolts 33, which pass through cored holes in the bridle-plate 29, the cap 19 and the housing 4. The nuts 34 on the lower ends of the king bolts 33 engage the housing 4 in the cored pockets 35 in same above the recesses 8 and 9. If preferred, a key through the housing 4 and through the lower portion of the king bolt 33 could of course be substituted for the nut 34 in a well known manner.

The returner-bar body 36, preferably a steel casting, with a renewable cast iron blade 37 bolted to the top of same, is supported upon the steel bar 38 to which it is clamped by U bolts 39. Each end of the bar 38 rests in a bearing block 40, which in turn is supported in a pocket 41 formed .on the inside of the housing 4. By this arrangement, the returner bar is hingedly supported at its lower edge. A projection or lug 42 is cast at each end of the'returner-bar body 36. A steel pin 43 is securely bolted through the housing 4, on which a lever 44 is fulcrumed to engage the rear of the lug 42 of the re turner-bar body 36. One end of the bolt 45 is pivoted to the lower end of the lever 44 and the other end of the bolt 45 is passed through :1 lug 46 cast on the inside face of the cap 10 near its lower end.

It will now be noted that, as the king bolts 33 do not pass below the recesses 8 and 9, the distance between the centers of the lower rollers 2 and 3 is reduced to a minimum, and the king bolts have been separated to permit of the upper roller 1 having larger journals. Access to the inside of the cylinder 21 may be readily had by the removal of the bridleplate 29. The object of the single tie-bolt 13, instead of two like the tie-bolts 12, is to provide room for the flanges 6 of the bearm s 5.

While the housing 4, the cap 19 with the cylinder 21 are steel castings, and the king bolts 33 are of bar steel, the bridle-plate 29 is made of cast iron in order that it will be the ,first to break in case of any excessive strain due to an abnormal pressure on the ram 22 and thus act as a safety device, which can be renewed cheaply. The portion of the housing 4 between the recesses'8 and 9 is made fully as strong as the combined tensional strength of the two king bolts 33, as this portion of the housing 4 is in tension when the mill is in operation.

We claim:

1. In a sugar-cane mill, a housin a cap engaging the jaws at the top of said ousing and provided with a hydraulic cylinder with ram, 2. bridle-plate above said cylinder, and two king bolts passing through holes in said cap and clamping said bridle-plate to the housing. r

2. In a sugar-cane mill, a housing, a cap engaging the jaws at the top of said housing and provided with a hydraulic cylinder with ram, a bridle-plate above said cylinder, two king bolts clamping said bridle-plate to the housing, and a plate interposed between the cylinder and the bridleplatc.

3. In a sugar-cane mill, a housing, a cap engaging the top of the housing and provided with a hydraulic cylinder with ram, a bridle-plate above said cylinder, two king bolts clamping the bridle-plate to the housing, a plate interposed between the cylinder and bridle-plate, and a crimp for sealing the joint between said plate and cylinder.

4. In a sugar-cane mill, a cast steel housing, a cast steel cap engaging the top of said housing and provided with a hydraulic cylinder, a cast iron bridle-plate above said cylinder, and two steel bolts for clamping the bridle-plate to the housing.

'5. In a sugar-cane mill, a housing, a returner-bar supported at one end in said housing and hinged at its lower edge, a lever fulcrum'ed on a pin through said housing and abutting said returner bar laterally, and a bolt hinged to said lever by which the lever can be adjusted to engage the end of said returner-bar to a greater or less degree.

6. In a sugar-cane mill, a housing, front and rear caps, two tie-bolts'clamping the upper ends of said caps to the housing, and one tie-bolt passing through the housing and clamping the lower ends of said caps to said housing, substantially as and for the purpose described.

7. In a sugar-cane mill, a housing, a cap engaging the top of the housing and provided with a hydraulic cylinder with ram,

a bridle-plate above said cylinder, two king bolts clampin saidbridle-plate to the housing,'front an rear caps, and three tie-bolts clamping the front and rear caps to the housing.

8. In a sugar-cane mill, a housing, a cap engaging the top of the housing and provided with a hydraulic cylinder with ram,

:1. bridle-plate above said cylinder, two king bolts clamping said bridle-plate to the housin a returner-bar supported at one end in said housing, a lever fulcrumed on a pin in said housing, and a bolt hinged to said lever for adjusting the pressure of said lever against the end of the returner-bar.

In testimony whereof we aflix our signatures, in presence of two witnesses.

WILLIAM JOHN DYER. ARTHUR FREDRICK EWART. Witnesses:

Ron'r. J. PRA'rr, P. H.. Bunnnrr. 

